O is any point on the diagonal B D of th...

`O` is any point on the diagonal `B D` of the parallelogram `A B C Ddot` Prove that `a r( O A B)=a r( O B C)`

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A point D is taken on the side B C of a \ A B C such that B D=2D Cdot Prove that a r\ (\ A B D)=\ 2\ a r\ (\ A D C)

In Figure, A B C D is a trapezium in which A B||C D . Prove that: a r( A O D)=a r( B O C)dot

In Figure, A B C D is a ^(gm)dot\ \ O is any point on A CdotP Q\ A B\ a n d\ L M A Ddot Prove that a r(^(gm)D L O P)=\ a r\ (^(gm)B M O Q)

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